Cinematographic exposing apparatus



April 9, 1929. H.,|=R1Ess 1,708,087

CINEMATOGRAPHIC EXPOSING APPARATUS Filed Nov. 16, 1926 5 k F if, in la n1 [Ya 9 a I o %1 1 w:-

f 5: WM!!! I NW N W MW f@ i I 5 Patented Apr. 9, 1929.

UNITED STATES PATENT OFFICE.

HANS FRIESS, OF BERLIN-WILMERSDORF, GERMANY, ASSIGNOR TO ASKANIA-WERKEA.-G. VORMALS CENTRALWERKSTATT DESSAU UND CARL BAMBERG-FRIEDENAU, FBERLIN-FRIEDENAU, GERMANY, A CORPORATION OF GERMANY.

GINEMATOGRAPHIC EXPOSING APPARATUS.

Application filed November 16, 1926, Serial No. 148,706, and in GermanyNovember 17, 1925.

i and secondly, its front portion can be opened upwardly. It is alreadyknown to provide cinematographic exposing apparatus with a plurality ofobjectives adapted to be used alternately and arranged in a rotatoryhead, ,7

but the arrangement and combination of the parts in said apparatus asdesigned up to now' has beenv such that the film holders could bearranged'either only one behind the other or one above the other, thefilm being in either case conducted in a straight line from the oneholder across the objective to the other holder.

It is with such devices, when the film holders are arranged side byside, difiicult to house the upper film loop inja suitable mannerbecause that place at which the loop forms is occupied already by therotatory objective carrier. The first par-tof the present inventionrelates to providing-a suitable space for that loop, and for thispurpose I have provided a separate space behind the rotatory carrier atthe top of the apparatus by arranging thefront portion of the top plate'of the apparatus on a higher plane, and also the adjacent portion whichis hinged to that'raised top portion rises u to it whereby said separatespace for the Elm loop mentioned is obtained.

Another part of. this invention consists in the feature thatthe rotatoryobjective carrier is located completely within the micetion apparatus,or is, in other wor s, surrounded on all sides with a protective casingwhereby it is prevented completely from be- 40 ing damaged.

, I Q Finally, the space in which the rotatory objective carrier ishoused may alsb be closed by a cover, having an opening arrangedc'oaxially with that objective which is in its working position and tothis cover may be fastened a separate tube ring locatedcoaxially withthat objective which is in its working position; that tubejri'ng 1slntended for, attaching to it, for certaln extraordinary ber, forinstance such a one as employed in tele-optics, the like.

The invention is illustrated diagrammatically and by way of example onthe accompanying drawing, on which Fig. 1 is a longitudinal sectionthrough a cinemategraphic exposing apparatus designed accordin to thisinvention, and

Fig. 2 is chiefi a plan and partly a hori zontal section 0 the same.

On the drawing, a denotes the main box proper of the apparatus, 6 itsfront portion which can be opened upwardly, andchinges connecting a andb with each other. The rotatory head (I which carries a plurality ofobjectives e is housed in the portion 72. That ob ective which is in itslowermost position at the time being is in its working position oppositethe film i. The rotatory head is turnable upon the pivot g and can befixed in its adjusted position by any suitable means (not shown in thedrawing). In the main box a are arranged side by side a winding-off filmholder 17 and a winding-on film-holder 0 The film strip i leaving theholder p passes over a sprocket wheel k,,,forms then a loop 70 andproceeds now downwardly across the objective opening f, the film, afterhaving been exposed forms another loop 2 passes over another sprocketwheel 9, and disappears finally in the holder 0 To render possible theformation of the 100 is without colliding with the uppermost objectivewhich isnot? in its working position, the'box portions a and b areenlarged upwardly in the manner shown in- Fig. 1, that is to say, whilein the old constructions the plane m is the bordering plane of theentire top surface of the apparatus, the top plane of the portion 71 ofthe apparatus is nowhigher and the two top portions of a and b areconnected with each other by an oblique wall portion a; in front of theportion 6 and below the'higher top portion is a chamber la enclosing thefilm loop k which is, therefore, not in the least disturbed by therotatory head (i, or by the objectives 8 respectively.

or an additional diaphragm, or

Adjusting the device into working position may be effected in variousways, for instance by hand.

There is provided also a device for adjusting the distance, this deviceconsisting of a lever s aifixed firmly to an axle 23 inserted into ahollow pivot g and carrying a pin a engaging a groove 41' provided atthe inner side of the bore of the pivot g. A screw w screwed into thehollow pivot g from the front end of this latter holds all these partstogether. If the lever s is turned in one or the other direction the pina is moved along in the curved groove 0 whereby the pivot g, togetherwith the rotatory objective carrier, is shifted axially to the one orthe other side.

This adjustment serves for regulatlng the distance. The graduated scalem pertaining to the lever s is of tubular shape so that that portionwhich pertains to the objective that is in its Working position at thetime being,

can be exposed to view.

As appears from the drawing, the rotatory objective carrier is locatedcompletely within a casing. This casing may be formed for instance by achamber 1 of the camera, the walls of which enclose the respectiveobjective on all sides. Said chamber 3 is, preferably, closed by a cover2 afiixed to the casing by screws 2 and leaving an opening solely atthat place where the just employed objectiveis located.

It is suited tothe purpose in view to provide at said place a tuberingT, the threadcarrying extension of which extends through said cover2 and is affixed to it by a nut T This tube ring is provided in knownmanner withan extension T to which, if needed, a

particular optical device or member such, for instance, as employed fortele-optics, or an additional diaphragm, mav be attached.

The arrangement and combination shown may be modified in various wayswithout departing from the gist of the invention, the latter beingapplicable not only with cinematographic exposing apparatus in which theseveral objectives are located in a rotatory head or carrier, but alsowith such in which this carrier is shiftable in a plane.

I claim:

1. In a cinematographic exposing apparatus, in combination, a main boxof the camera, a separate front portion connected with said box in sucha manner as to be adapted to be opened pivotally and being enlargedrelatively to the main box, a plurality of objectives arranged withinsaid front portion, a common carrler for them, a winding-ofi film holderand a ,wlndlng-on film holder arranged side 'by side within the mainbox,

guide members for the film and an enlarged portion arranged on the mainbox and formmg with the said front portion a chamber adapted to receivethat portion of the film loop which is located near said objectivecarrier.

2. In a cinematographic exposing apparatus, in combination, a main boxof the camera, a separate front portion connected with said box in sucha manner as to be adapted to be opened pivotally, a plurality ofobjectives arranged within said front portion, a common carrier forthem, a. windingofi' film holder and a winding-on film holder arrangedside by side within the main box, guide members for the film and achamber formed by a higher portion of the main box and front portion, anoblique wall portion connecting the top walls of said main box and saidhigher portion with each other, said chamber being adapted to receivethat por-' tion of the film loop which is located near said objectivecarrier.

3. In a cinematographic exposing apparatus, in combination, a main boxof the camera, a separate front portion connected with said box in sucha manner as to be adapted to be opened pivotally, a plurality ofobjectives arranged within said front portion, a common carrier forthem, a winding-off film holder and a winding-on film holder arrangedside by side within the main box, guide members for the film, aprotective casing connected with said front portion and enclosing saidobjectives and said carrier on all sides, a closure adapted to closesaid protective casing at its front and having only an opening arrangedcoaxially with that objective which is in its working position and atube ring afiixed to and arranged over the opening of the closure andadapted to receive a special optical device.

4:. In a cinematographic exposing apparatus, in combination, a main boxof the camera, a separate front portion connected With'said box in sucha manner as to be adapted to be opened pivotally and being enlargedrelatively to the main box, a plurality of objectives arranged withinsaid front portion, a

I common carrier for them, a winding-ofi' film holder and a winding-onfilm-holder arranged side by side within the main box, guide members forthe film, an enlarged portion arranged on the main box forming with inthe said front portion a chamber adapted to receive that portion of thefilm loop which is located near said objective carrier and a protectivecasing enclosing said objectives and said carrier on all sides.

5. In a cinematographic exposing apparatus, in combination, a main boxof the camera, a separate front portion connected with said box in suchmanner as to be adapted to be opened pivotally and being enlargedrelatively to the main box, a plurality of objectives arranged withinsaid front portion, a

common carrier for them, a windingofi' film holder and a winding-on filmholder arranged side by side within the main box,

guide members for the film, an enlarged porclose said protective casingat its front and tion arranged on the main box forming with having onlyan opening arranged coaxially said front portion a chamber adapted torewith that objective which is in its working 10 ceive that portion ofthe film loop which is position.

located near said objective carrier, at protec- In testimony whereof Ihave aflixed my tive casing enclosing said objectives and saidsignature.

carrier on all sides and means adapted to HANS FRIESS.

